Do I need to use the parking brake when driving an automatic car?

I recently got an automatic car, and I'm not sure if I still need to use the parking brake when driving. Can I rely on the car's gears to keep it stationary, or should I use the parking brake as a precaution?

You should always use your parking brake, even when driving an automatic car. While the gears do help keep the car stationary, the parking brake adds an extra layer of safety and can prevent any accidental movement of the car.